Etymology
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Muskogean 

Native American language family of the southeastern U.S., 1890, from Muskogee, name of the Creek and related tribes (1775), from Creek maskoki.

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double-bass (n.)

string instrument, the largest and deepest instrument of the viol family, by 1728; see double (adj.) + bass (n.2).

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Celsius 

1797 in reference to the type of thermometer; 1812 in reference to the scale of temperatures, from the name of Swedish astronomer Anders Celsius (1701-1744) inventor of the centigrade scale in 1742. His family name is a Latinized translation of Högen, the name of the family estate in Sweden, taken as "mound," from Latin celsus "raised, high, lofty, great" (from PIE root *kel- (2) "to be prominent; hill"). 

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Bernoulli's principle 

named for Dutch mathematician Daniel Bernoulli (1700-1782), who published it in 1738. The family produced several noted mathematicians.

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Guelph (n.)

also Guelf, one of the two great parties in medieval Italian politics, characterized by support of the popes against the emperors (opposed to the Ghibellines), 1570s, from Italian Guelfo, from Old High German Welf, name of a princely family that became the ducal house of Brunswick, literally "whelp," originally the name of the founder (Welf I). The family are the ancestors of the present dynasty of Great Britain. The name is said to have been used as a war-cry at the Battle of Weinsberg (1140) by partisans of Henry the Lion, duke of Bavaria, who was of the family, against Emperor Conrad III; hence it was adopted in Italy as the name of the anti-imperial party in the Middle Ages.

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genealogy (n.)

early 14c., "line of descent, pedigree, descent," from Old French genealogie (12c.), from Late Latin genealogia "tracing of a family," from Greek genealogia "the making of a pedigree," from genea "generation, descent" (from PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups) + -logia (see -logy). An Old English word for it was folctalu, literally "folk tale." Meaning "study of family trees" is from 1768.

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hosta (n.)

1828, plant genus of the lily family, coined 1812 in Modern Latin from name of Austrian physician and botanist Nicolaus Thomas Host (1761-1834).

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gently (adv.)

early 14c., "befitting one of gentle rank, as of good family," from gentle + -ly (2). Meaning "quietly, softly, without rudeness, gradually" is from 1550s.

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Houston 

city in Texas, U.S., founded 1836 and named for first president of Texas, Sam Houston. The family name is from the barony of Houston in Lanark.

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Ashanti (n.)

also Ashantee, 1705, Asiantines, one of the Akan people of central Ghana; a native name. The language, part of the Niger-Congo family, is so called by 1874.

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